Evolution: Change in the genetic
composition of a population over
Evolution: Change in the genetic
composition of a population over
?Could new species arise from an ancestral form by adaptions to different environments?
(1) Individuals in a population vary in their traits
?What is a trait?
Trait variation comes from random mutations
(2) Some of these differences are heritable
(3) In each generation, many more offspring are produced than can survive
(4) Individuals with certain heritable traits are more likely to survive and reproduce (adaptation)
If you were a bacteria today, in 2020….
Humans = ~25 years
Bacteria = ~20 minutes
How long is the average course of antibiotic treatment?